d/control: bump ceph dependency to 12.2

A newer than the Luminous version is shipped with buster, and our
ceph repos are on Nautilus (14.2) in PVE 6.

Allows to drop a check for really old ceph versions (< 10, so
Infernalis and older).

Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>

PVE/Storage/RBDPlugin.pm

@@ -77,9 +77,6 @@ my $librados_connect = sub {
 my $krbd_feature_update = sub {
     my ($scfg, $storeid, $name) = @_;
 
-    my ($versionparts) = PVE::CephConfig::ceph_version();
-    return 1 if $versionparts->[0] < 10;
-
     my (@disable, @enable);
     my ($kmajor, $kminor) = PVE::ProcFSTools::kernel_version();